80872434 ÷ 139 
We want to figure out the number of times 80872434 can be divided by 139.

Advancing to step 1:
8 divided by 139 is 0 with a remainder of 8.
The number 0 becomes the next digit in our result. 
Result so far: 0.0
If we subtract 0 from 8, we get 8.
Fetch the next digit (0) from the dividend, attach it to 8 and continue: 80 / 139

On to step 2:
139 can be fit into 80 0 times, resulting in a remainder of 80.
Put 0 as the next digit of the answer. 
Result so far: 0.0
Subtract 0 from 80 to get 80.
Grab the next digit (8) from the dividend, add it to 80, then carry on: 808 / 139

Going ahead to step 3:
139 goes into 808 5 times with a remainder of 113.
Write down 5 as next digit of the result. 
Result so far: 5.0
Subtract 695 from 808 to get 113.
Grab the next digit (7) from the dividend, add it to 113, then carry on: 1137 / 139

Let's proceed to step 4:
139 can be fit into 1137 8 times, resulting in a remainder of 25.
Put 8 as the next digit of the answer. 
Result so far: 58.0
Subtract 1112 from 1137 to get 25.
Bring next digit (2) of the dividend behind the 25 and repeat the process: 252 / 139

On to step 5:
If we divide 252 by 139, we get 1 and a remainder of 113.
The next digit of our result is 1. 
Result so far: 581.0
If we subtract 139 from 252, we get 113.
Take the next digit (4) from the dividend and append it to 113, then repeat: 1134 / 139

Moving on to step 6:
139 can be fit into 1134 8 times, resulting in a remainder of 22.
The number 8 becomes the next digit in our result. 
Result so far: 5818.0
Subtracting 1112 from 1134 leaves us with 22.
Bring next digit (3) of the dividend behind the 22 and repeat the process: 223 / 139

Moving on to step 7:
If we divide 223 by 139, we get 1 and a remainder of 84.
Record the quotient 1 as the next digit in the result. 
Result so far: 58181.0
If we take 139 away from 223, we end up with 84.
Include the next digit (4) from the dividend after 84, then repeat: 844 / 139

Let's proceed to step 8:
844 divided by 139 is 6 with a remainder of 10.
Put 6 as the next digit of the answer. 
Result so far: 581816.0
Deduct 834 from 844 and we're left with 10.
Since there are no more digits in the dividend, we add a zero to the remainder making it 100, and continue the process.

Let's proceed to step 9:
139 can be fit into 100 0 times, resulting in a remainder of 100.
The number 0 becomes the next digit in our result. 
Result so far: 581816.0
Subtract 0 from 100 to get 100.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1000, and continue the process.

On to step 10:
When dividing 1000 by 139, we get 7 with a remainder of 27.
The next digit of our result is 7. 
Result so far: 581816.07
Deduct 973 from 1000 and we're left with 27.
Since there are no more digits in the dividend, we add a zero to the remainder making it 270, and continue the process.

Going ahead to step 11:
139 can be fit into 270 1 times, resulting in a remainder of 131.
The next digit of our result is 1. 
Result so far: 581816.071
Deduct 139 from 270 and we're left with 131.
Since there are no more digits in the dividend, we add a zero to the remainder making it 1310, and continue the process.

Advancing to step 12:
1310 divided by 139 is 9 with a remainder of 59.
Record the quotient 9 as the next digit in the result. 
Result so far: 581816.0719
The remainder is 59 after subtracting 1251 from 1310.
Since there are no more digits in the dividend, we add a zero to the remainder making it 590, and continue the process.

Advancing to step 13:
The number 139 fits into 590 4 times, leaving a remainder of 34.
Use 4 as the next digit of our solution. 
Result so far: 581816.07194
If we subtract 556 from 590, we get 34.
Since there are no more digits in the dividend, we add a zero to the remainder making it 340, and continue the process.

Step 14:
When dividing 340 by 139, we get 2 with a remainder of 62.
The next digit of our result is 2. 
Result so far: 581816.071942
Deduct 278 from 340 and we're left with 62.
Since there are no more digits in the dividend, we add a zero to the remainder making it 620, and continue the process.

Step 15:
139 can be fit into 620 4 times, resulting in a remainder of 64.
Use 4 as the next digit of our solution. 
Result so far: 581816.0719424
Subtracting 556 from 620 leaves us with 64.
Since there are no more digits in the dividend, we add a zero to the remainder making it 640, and continue the process.

Moving on to step 16:
139 can be fit into 640 4 times, resulting in a remainder of 84.
Use 4 as the next digit of our solution. 
Result so far: 581816.07194244
Subtracting 556 from 640 leaves us with 84.
Since there are no more digits in the dividend, we add a zero to the remainder making it 840, and continue the process.

Our division results in 581816.07194244 with a remaining 8.4e-08.